Veterinary obstetrical forceps



Feb. 19, 1929. 1,703,050

H. ZINS VETERINARY OBSTETRI CAL FORCBPS Filed Nov. 1927 ping from theluinds. vided at-its front end with an upwardly ex Patented Feb. -19,1929; i

UNITEDJSTATES PATENT oFFICE,

I-IUBERT ZINS,VOF WABASSO, MINNEsoTii.

VETERINARY OBSTETRICAL EoEoEPs,

Application filed November 3, 1927. Serial No. 230,814.

This invention relates to an obstetrical forceps adapted to be usedforthe purpose of delivering a pig which duet-o its size-is held againstnatural delivery by the pelvic bone of the sow, and has for one ofitsob:-

jects to provideanovel, simple and highly ei'iicientinstrument ofthischaracter which shall be so constructed as to permit it to bereadily insertedinto the vagina and engaged with the jaw of the pig.

With the foregoing-and other objects View, the nature'of which willappear as the description proceeds, the invention consists alaneindicated b the line 33 of Fi ure-1.

The forceps comprise elongated straight jaws land 2 which have theirrear endportions reversely bent and connected by a pivot 3. Elongatedhandles at and 5 extend rearwardly from the jaws 1 and 2, respectively,and they are provided with hooked rear terminals 6 and 7, respectively,which. are adapted to prevent the handles from slip- The jaw 1 isprotei'uling curved beak 8. The aw l and its beak 8 are circular incrosssection, the free end of the beak is roi'indcd, and. the jaw graduallytapers 1n the direction of the beak.

The jaw 2 is provided at, its front endwith' a flat beak 9 which extendsdirectly forward therefrom to a point forwardly beyond the beak 8. Thebeak 9 iselliptical in contour, and the edge thereof is rounded. The jaw2 is circular in cross section and tapers gradually in the direction ofthe beak 9; r

In practice, when the mouth ofthb pig, which due to its size cannot passthe pelvic bone of the sow, can be felt with one finger, the forceps areinserted into the Vagina with the jaws 1 and 2 in closed relation andwith the flat beak 9 in contact with the finger, which is used to guidethe beak 9 into the mouth of the pig until the. curved beak sideelevation of the Figure 3 is a sectional View taken on the 8 'reachesthelower jaw. The forceps are then manipulated to slightly open-the jaws 1and 2, and they are then pushed further intothe vagina untilthe curvedbeak 8' reaches the bifurcation of the lower jaw. Theforceps are thenclosed to grip the lower aw and thereafter traction is applied to effectthe delivery of the pig.

As the jaws 1 and 2 are of considerable length, and'as the flat beak 9extends for-- Wardly beyond the curved beak 8, the jaw of thepig maybeengaged with comparatively little effort and in a comparatively shorttnne. V 1 and 2 permit them to be brought into c0mparatively closerelation when they are deep in the'vagina, and the extension of the flatbeak 9 beyond the curved beak 8 permits the fiat beak to act as a guidein placing the flat beak into the mouth of the pig. As the jaws 1 and 2and the curved beak 8 are round Furthermore, the length of the jaws incross section, as the free end of the curved beak is rounded, and as theedges of the flat beak 9 are rounded, it is impossible to injure the sowor pig during the insertion of the forceps into the vagina and duringtheir engagement with the mouth. lVhen necessary to use otherinstruments before the finaldelivery of the pig, the forceps may be heldin place, witlrthe jaws ltand 2 on gaging the mouth of the pig, by meansof a string or rubber band 10 applied to the ter urinals 6 and 7, asshown in Figure 1. The forceps are also adapted, as will be ap iiaront,to beused for the un-pose of delivering the fetus of dogs, cats andother small animals.

Itfshouldbe understood that the drawing is merely illustrative and doesnot pretend :to give exactproportions. Furthern'mre, the said drawing isillustrativeof a preferred construction, it being my expectation thatvarious changes and modification may be 'm'ade without departing fromthe spirit and scope of myinvention.

What is claimed is 1. A forceps comprising a pair of elongated straightjaws, Jneans pivotally connecting the jaws, handles carried by the jaws,

acurved beak Carried by the forward end of one of the jaws and extendingtherefrom inthe direction of the other jaw, and a flat beakextendingdirectly forward from the contour carried by the long jaw and extendingforwardly therefrom to a point beyond the curved beak, the jaws andcurved beak being circular in cross section, and the free end oftheecurved' beak end the edge of'the flat beak being roundecb Intestimony whereof I aflix my signature.

HUBERT ZINS.

